I have a very bad smell coming from one of my front incisors with a few weeks, it tastes bad also. i have been to the local dentist and had it treated but it has not gone away. The inflammation has gone down but the smell is horrible. what could this be?
It seems you may have chronic infection associated with either your teeth or gums. You need to seek further professional advice
and perhaps further X-rays to diagnose where the problem is emanating from.
Please see your dentist again as it is difficult to provide a diagnosis for enquries via internet